It's essentially analog vs. digital - more bandwidth, less interference, 
no error detection/correction, etc.  Probably not an issue still if 
you're using *good* cables, but you just want to make sure no emi source 
near will cause picture issues - not/shouldn't be an issue with dvi.

Quick google found this:

DVI is the first digital standard and supports a dual link mode, which 
allows res up to 2048 x 1536 and beyond. The DVI specification supports 
hot plug and play display devices.

There are 3 main different configurations when it comes to DVI:
1. DVI-A is designed for analogue only connections
2. DVI-D is designed for digital signals only
3. DVI-I (Integrated) is a single connector which is designed for both 
digital and analogue use, and is backward compatible with analogue displays.

Most LCD monitors that support digital signal have DVD-D connectors.

The cables: DVI-I single link configuration provides bandwidth 
sufficient for res up to 1600 x 1200 and high speed transmission up to 
4.95Gbps.
DVI-I dual link config can do 2048 x 1536 @ 9.9Gbps, this is the same 
for a DVI-D dual link configuration.

-mb


On 01/11/2012 01:45 AM, Mark Jarvis wrote:
>
> My monitor has a 15 pin VGA port, as does the old computer so it looks
> like an adapter to connect my DVI cable from the new box to the KVM
> switch will make it work. Of course that brings up the question of what
> am I losing by not using DVI?
>
> A quick Google check (which I should have done earlier) showed lots of
> adapters for just a few bucks, so I should be able to pick one up
> locally--which leads back to the "what do I lose" question.
>
> Comments?
>
> Thanks,
>
> Mark Jarvis
>
>
> Mark Jarvis wrote:
>>
>> I just ordered & received a TRENDnet 2-port USB KVM switch kit. I
>> thought I was OK on the video because its rated resolution is greater
>> than what I'm running.
>>
>> What's the problem? It appears to only have VGA video ports and one of
>> the computers I be hooking up to it has only DVI. Is there such a
>> thing as a DVI-to-VGA adapter? Will I have problems using this unit
>> with my computers?
>>
>> I'm sure that the solution is simple, & I probably should know the
>> answer, but video is one area I have no expertise in.
>>
>> Thanks in advance for any advice.
>>
>>
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